#27. Paris Jackson
Paris Jackson is the daughter of the late Michael Jackson. She has never been afraid to speak her mind, and that has gotten her a lot of attention. Among the many statements she has made, she has claimed to believe that her father was murdered.
Although an investigation and a trial took place, which determined that Jackson's death was due to an accidental overdose of prescription medication, Paris insists that somebody did that to her father and he is yet to be found.
#26. B.O.B.
Rapper B.O.B. has always opened up his mind to his fans. Through his social media posts, he has revealed that he believes that Hollywood is just one big conspiracy, and that many celebrities have actually been replaced by clones.
According to him, there are huge underground cloning centers that are being hidden from everyone. Not only that, but he also believes that the Earth is flat and that the moon landing was fake.
#25. Marion Cotillard
Marion Cotillard is one of the most famous actresses out there. When you reach that level of fame, your voice is easily heard, and she has used it to spread awareness on conspiracies she believes.
For example, like many others, she believes that the moon landing was fake. She has also claimed that she believes in the 9/11 conspiracy, and that the government is hiding what really happened.
#24. Jonathan Davis
Nu metal star Jonathan Davis has always been very vocal about his beliefs in conspiracy theories, no matter how controversial. For example, he believes that the Illuminati are a real thing.
He even expressed that many politicians are specifically chosen by the Illuminati and act as puppets to fulfill the goals of the secret organization. He also claimed that Miley Cyrus' wild phase was a plot from the government to distract people from real issues. Wow.
#23. Tom DeLonge
Blink-182 star Tom DeLonge is also known for being a huge believer in alien conspiracy theories. According to DeLonge, there's proof that there's alien life out there, but the government has been trying really hard to hide it.
He believes that when humans reached the moon, they found something that has been hidden for decades. While he doesn't know for sure what that is, he believes it is aliens.
#22. Billy Corgan
What is it with rock musicians and conspiracy theories? Billy Corgan, lead singer of The Smashing Pumpkins, has spent most of his time on social media and on TV trying to spread the word about chemtrails.
The chemtrail conspiracy is basically about how the government is slowly poisoning people by releasing toxic substances into the air from planes. Corgan is also a firm believer of the Illuminati and how they are also responsible for chemtrails.
#21. Chipper Jones
Baseball player Chipper Jones has always been a fan of conspiracy theories, including the one involving JFK. Ever since the former President was assassinated, many people have suspected that there was more to the story than the FBI led people to believe.
The official story is that a man named Lee Harvey Oswald pulled the trigger that fateful day, but Jones claims that there were more people involved. He also holds the very controversial belief that the horrific Sandy Hook shooting was fake.
#20. Steven Seagal
Steven Seagal rose to fame as an action star, though he has also became known for spreading the gospel on his favorite conspiracy theories. He has been under fire for his very controversial beliefs about how most mass shootings are staged.
Does he have any proof to back that up? No. Does he still believe it? Absolutely. He has even appeared on Russian TV to share his thoughts, which is something he is not allowed to do in America.
#19. Janeane Garofalo
Stand-up comedian and STL star Janeane Garofalo has always expressed her concerns about the 9/11 attacks several times, both on TV and in interviews.
Like a few other celebrities on our list, Garofalo believes that the terrorist attack was actually an inside job orchestrated by then-President George W. Bush as a pretext to initiate a war in the Middle East.
#18. Spike Lee
Director and producer Spike Lee has always been very outspoken about the struggles of African-Americans in the United States believes in very controversial conspiracy theories that haven't helped his cause very much.
For example, Lee believes that the AIDS crisis in the 1980s was started by the American government in order to eliminate the black population. According to him, the government purposefully inserted the virus into the black population of big cities.
#17. Randy Quaid
Actor Randy Quaid is known for being very outspoken about the numerous conspiracy theories he believes in. In 2010, he famously went on TV saying that he was seeking asylum in Canada because a group known as the Hollywod Star Whackers were after him and his family.
He also claimed that said group had been responsible for the deaths of actors Heath Ledger and David Carradine, both of which died of accidental causes.
#16. Rosie O'Donnell
Rosie O'Donnell is known for speaking her mind; in fact, she has made a whole career out of it. One of her most famous beliefs is that she is also a 9/11 truther.
She brought up the subject many times on the show, saying that the fire from the collision shouldn't have been able to melt the steel in the Twin Towers, a common belief of conspiracy theorists.
#15. Martin Sheen
Veteran actor Martin Sheen has also expressed his doubts about what really happened on 9/11. "There are obviously a lot of unanswered questions (...) The key to that is Building 7 and how that came down under very, very suspicious circumstances", he said in an interview.
Interestingly enough, his son, Charlie Sheen, is also a fellow conspiracy theorist, and we'll talk about him on this list very soon.
#14. Dave Chappelle
Many conspiracy theories revolve around the entertainment industry, and when people in the actual showbiz world talk about them, it really makes you wonder if they have any truth in them. One of the many celebrities that have discussed these theories is comedian Dave Chappelle.
One of the many things he believes in is that there are not one but several secret organizations that control what happens in the industry. He also believes that these secret societies particularly target black people to make them look foolish in the media.
#13. Bruce Willis
Actor Bruce Willis has always expressed his views on the JFK conspiracy that so many celebrities seem to love. In 2007, he commented that he did not believe Oswalt was the real killer of JFK and that the actually murderer was still on the loose.
He said he was afraid he was going to get killed for saying it, but that those responsible were probably still in power, at least in the shadows. Willis is safe and sound and nobody has tried to kill him, so many those guys aren't in power after all.
#12. Tila Tequila
Reality TV star Tila Tequila has managed to stay in the media only for controversial things, mostly her strange beliefs and opinions. Amongst those beliefs is that she thinks that Hitler "wasn't the bad guy people painted him to be". Wow.
As far as actual conspiracy theories go, she is a firm believer that the world is controlled by lizard people, who are also working with the Illuminati and Satanists. She also thinks that they were involved in Paul Walker's death somehow. Sure, Tila, sure.
#11. Prince
Rock star Prince was known for being quirky and different in the best way possible, so it is not so crazy that he was very much into conspiracy theories. In fact, it totally sounds like something he would believe in.
Prince was always very vocal about how he believed in the New World Order, chemtrails, and the Illuminati. He talked about chemtrails more than anything, claiming that he always though something was up since he was a child.
#10. M.I.A.
Rapper M.I.A. broke into the music scene in the 2000s, though she kind of faded into obscurity. M.I.A. not only does not use social media, but actually believes in a conspiracy theory against it.
The rapper insists that Twitter and Facebook are government creations designed to track and control people. She also believes that the government controls Google and decides what people see on their computers to brainwash them, especially kids.
#9. Woody Harrelson
Actor Woody Harrelson has always been very vocal about the things he cares about, like the environment and veganism. Oh, and also the 9/11 conspiracy. At this point, what celeb doesn't believe in it?
As the 9/11 truther that he is, he tried to make a movie about it to start an independent investigation about what "really" happened. The movie unfortunately collapsed due to lack of money.
#8. Whoopi Goldberg
There was a time when Whoopi Goldberg was an actress, but she recently shifted her focus and became a permanent member of the cast of The View. She once said on the show that the moon landing was fake.
Whoopi explained all the reasons why she thought the moon landing was a hoax, such as the fact that the flag was waving even though there isn't any air in space. Well, turns out that there are explanations to all those things, but Whoopi was not aware.
#7. Jenny McCarthy
Jenny McCarthy is nowadays best known as an authentic conspiracy theorist more than anything else. She now has a radio show and basically all she talks about are these strange theories she has.
The one she is the most infamous for is of course, that vaccines cause autism. This claim has no scientific proof to back it up. In fact, vaccines do exactly what they are supposed to do: prevent diseases, and that's about it.
#6. Mark Ruffalo
Who would've thought that Mark Ruffalo is not only a talented Hollywood star but also a conspiracy theory believer? What conspiracy theory could he possibly believe in? Ding ding ding!, you've guessed it: the 9/11 conspiracy.
He does not fully understand how the towers exactly fell, and he feels that the investigations that the government did were shady. In an interview, he said he hoped new investigations would be made to clarify what actually happened that day.
#5. Roseanne Barr
Roseanne Barris an incredible comedian, but she is definitely not a woman of science. She has been under fire for many controversial comments over the years, and among the claims she has made, she said that Monsanto is responsible for chemtrails.
Barr believes that Monsanto sprays its pesticides from planes in order to create a layer of chemicals that act as a mirror with sunlight and reflect onto their crops. That seems a little bit out there, Roseanne.
#4. Courtney Love
Music star Courtney Love has always been somewhat of a controversial figure, partly because of the many controversial things she has said. This one, however, is kind of... funny, in a way.
When the Maysia Airlines MH370 flight disappeared, a website asked people to look at satellite images to see if they would find the plane somewhere in the ocean, which sounds more like an internet scam than anything. Love took part and was convinced she had found it, so she posted a screenshot of what she thought was the plane on social media. At least she was trying to help!
#3. Charlie Sheen
As we've mentioned before, Martin Sheen believes in the 9/11 conspiracy, so much so that he actually tried to finance Woody Harrelson's 9/11 movie, which never got made. And who actually introduced him to this conspiracy? His beloved son, Charlie Sheen.
Sheen, who was also claimed to have tiger blood running through his veins, is very passionate about his belief, and even tried to reach out to President Barack Obama. He wrote a letter urging him to launch a new investigation to prove whether the attack was an inside job or not.
#2. Kanye West
Kanye West is more famous for being controversial than for his music nowadays. He believes that AIDS were created by the government. According to him, the CIA engineered the virus and planted it in Africa to get rid of black people.
Not only that, but he also believes that crack was introduced to black people to destroy the Black Panther Party. And he's not the only one in his family with this kind of belief, just check out our #1 spot...
#1. Kylie Jenner
Makeup mogul and influencer Kylie Jenner is very well known for her looks, and definitely not for her scientific knowledge. In 2015, she was subject to plenty of ridicule on social media for a meme she shared on her Twitter account.
The picture included random claims about chemtrails, for example, how she saw 75 planes spreading "white stuff" at the same time in the sky. The picture also claims that they are probably to blame for the death of bees, and that she can't be the only one seeing this.